I just had my SC rebuilt at 88hrs on a 2008 (that I bought in the spring) by pwcmuscle and they got it back to me the same week, btw. They said that the rebuild kit did not change for the 200hr kit vs the 100hr kit. It was all a marketing thing from SeaDoo to counter the Yamaha ads claiming they don't need a 100hr rebuild. That being said, as mentioned above, the SC bearings still are spinning even when you are not in the boost. Part of what wears the clutch out is constant hard acceleration and deceleration. It sounds like you don't do too much of that, so that would logically mean the clutch washers should last longer. If the seadoo Jumps out of the water and you were to stay on the throttle with no water going through the pump, the sc can spin up too fast and wear out clutches and bearings quicker. Again, it sounds like you ride very conservatively so it should last longer. However, I would follow the manufacturer's recommendations. More than likely you should be okay on waiting more than 100 hrs, but I wouldn't wait until 200, if it were me.